Grand and was apparently uncommon even number of serious logging incursions into the tiny there. The Perrier's diadem sifaka is recorded forest remnants of Northern Madagascar. Many from one other locality to the east of Ankarana, endemics are threatened as a result. and was seen at Ankarana in the dry forests to the north-east of the reserve, which were not Paul D. Stewart, Department of Biology, Southampton disturbed in the recent felling. University, Southampton SO9 5NH, UK. The Ankarana incident is just the latest of a

The Indo-Chinese rhinoceros The last known surviving population of the threatened Javan rhinoceros Rhinoceros son- daicus lives in the Ujung Kulon National Park in Java. Several recent contributions about the wildlife of the Indo-Chinese countries (Vietnam, Laos, Kampuchea) presented evidence of the continued existence of a rhinoceros in that region, for example Thouless (1987) on some Kampuchean animals. He gave some data about the 'Javan rhino' surviving in Kampuchea, but in his discussion the rhinoceros remains unmen- tioned as a reason for special action. The reason for uncertainty is doubt about the specific identity of the rhinoceros living in that part of the world. This is caused by a lack of data, an absence of museum specimens and by con- flicting statements about the number of horns. In an earlier paper (Rookmaaker, 1980) I reviewed the available historical evidence about the rhinoceroses in the Indo-Chinese region. There were many uncertain records, but the few detailed ones all point to the Javan species only. One must always allow a measure of doubt, but in my mind I am convinced that the surviving speci- mens of rhinoceros in Laos, Kampuchea and Vietnam should be the Javan rhinoceros. The Sumatran rhinoceros Dicerorhinus sumatrensis could occur, but its presence has never been sub- stantiated. It appears logical to work from the premise that all rhinoceroses living in the coun- tries mentioned are Rhinoceros sondaicus only.

References Rookmaaker, L.C. 1980. The distribution of the rhinoceros in Eastern India, Bangladesh, China and the Indo-Chinese region. Zoologische Anzeiger, 205, 253—268. Thouless, C. 1987. Kampuchean wildlife—survival against the odds. Oryx, 21, 223-228. A female crowned lemur. This species, among others, is threatened by the destruction of L. C. Rookmaaker, Dokter Guepinlaan 23, 4032 NH Om- forest at Ankarana (Jane Wilson). meren, The Netherlands. Briefly 241

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